utia4474 utia4474

25-02-2020
Mathematics

contestada

Twice the sum of a number and six decreased by fifteen is the same as eighteen more than the product of five and the number. Find the number.

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nclovett03 nclovett03

25-02-2020

Answer:

-9

Step-by-step explanation:

2(n+6) -15 = 5n+18

2n + 12 - 15 = 5n + 18

2n - 3 = 5n + 18

2n = 5n + 21

-3n = 21

n = -9

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